Liquid Nitrogen Or Worse

Joes2Silly · Post by **Joes2Silly** » Sat Nov 04, 2006 8:19 pm

Well, I have been needing a cooling system for hard-core overclocking project... So i was throwing around a few ideas the other day, liquid nitrogen and submurging it in a non-reactive liquid stuck out the most. How expensive is liquid nitrogen? Would I be better off submurging it in a non-reactive liquid? I need some KRRAAZZZZYYYY cooling ideas, dang near any suggestion welcome

Post by **Sparkfist** » Sat Nov 04, 2006 8:40 pm

Well you could try liquid Nitrogen I'm not sure that it would work all that great. Reason being that the temperature that the Nitrogen is at could the system slower then faster. Remembe that electrons speed through a material is slowed when it's cooled, and -100C is very cold.

An alternative I could suggest is alcohol or ammonia. Both have a boiling temperature below freezing, but more importently is that these two are used in air condisioning systems which we all know keeps things cold. To make sure the system works effeciant as possible have a nice big radiator.

Joes2Silly · Post by **Joes2Silly** » Sat Nov 04, 2006 9:04 pm

okay, I did not understand that last part. Submurge it in alchol and do what with the radiator? You kind of lost me about there

usbcd36 · Post by **usbcd36** » Sat Nov 04, 2006 9:08 pm

Using liquid nitrogen to cool a computer wouldn't be very effective. After it evaporates, you have to buy more liquid nitrogen.

If you really want to be crazy, you could adapt a small refrigerator (NOT a mini-fridge, it has to have a real compressor, not just a peltier cooler) to cool the processor. I do not recommend this unless you are familiar with working with that kind of stuff, but you could get some very good cooling this way. If it's not critical that this system be elegant, you could combine it with a water cooling system by attaching the radiator to the coils inside the fridge.

One step lower would be to cannibalize a mini-fridge for its peltier cooler. First, make sure you have the cold side against the processor, then stick the biggest heatsink you can on the other side. What this device does is transfer heat from one side to the other when electric current is passed through it. This will cool down the processor, but the heatsink will become very warm as a result. Justâ€¦don't connect it up backwardsâ€¦

Joes2Silly · Post by **Joes2Silly** » Sat Nov 04, 2006 9:22 pm

I have a mini-frige, but I dont want to tear it apart. I am just going to submurge it in a alcohol and using a radiator or something to keep it cool

Krepticor · Post by **Krepticor** » Sat Nov 04, 2006 9:23 pm

Sparkfist wrote:Well you could try liquid Nitrogen I'm not sure that it would work all that great. Reason being that the temperature that the Nitrogen is at could the system slower then faster. Remembe that electrons speed through a material is slowed when it's cooled, and -100C is very cold.

An alternative I could suggest is alcohol or ammonia. Both have a boiling temperature below freezing, but more importently is that these two are used in air condisioning systems which we all know keeps things cold. To make sure the system works effeciant as possible have a nice big radiator.

Actually that is contrary to what I was taught in physics...the cooler temperature the faster the electrical response, however there is a point where the resistance of the materials are being compromised from the temperature and thereby increased in ohms

Also liquid nitrogen as a cooler would be bad since it compromises the intregritiy of the metals in the board...Unless you can compensate with some SERIOUS Heat...

Joes2Silly · Post by **Joes2Silly** » Sat Nov 04, 2006 9:41 pm

Is there some houusehold liquid that I could use for this expiriment? I have a readiator but no pump

PS I dont really mind if I destroy this system because im getting a AMD duron w/mobo in the mail soon. Yet i dont want to destroy it on purpose

Reaperman@home · Post by **Reaperman@home** » Sat Nov 04, 2006 9:48 pm

wait, the duron is an upgrade?
why do I suddenly get the feeling that by 'extreme cooling' you're hoping to offset an experiment that's horribly wrong to start with...

don't forget that just overclocking/cooling the processor has a limit, and that limit is that not everything around the processor can go much faster when overclocked. stability isn't going to be there if you're planning on something *really* crazy.

I can see the headlines in the paper. 'person submurges morbidly overclocked system in bath of alcohol and kills 20'
forchrissakes, black friday is right around the corner, and your time would be better spent standing in line for one of those $100 computers to the first 25 people.

vb_master · Post by **vb_master** » Sat Nov 04, 2006 9:57 pm

Joes2Silly wrote:Is there some houusehold liquid that I could use for this expiriment? I have a readiator but no pump

Put the mobo in clean veg. oil. No fans of course.

teraflop122 · Post by **teraflop122** » Sat Nov 04, 2006 9:59 pm

Any feasible cooling system must involve a cycle of some kind. Liquid Nitrogen and Dry Ice are not suitable because these substances will evaporate in a matter of days.

Currently the most powerful kind of computer cooling is a phase-change system, which is essentially the mechanism from a standard fridge.

This is an example of such a device:
http://www.crazypc.com/products/9290.html As you can see, they are rather expensive.

Somehow I doubt you will need such an extreme solution. Installing a radically large heatsink and fan would cost very little and keep a heavily overclocked processor cool. Phase-change is jut overkill.

Post by **Skyone** » Sat Nov 04, 2006 10:21 pm

Veggie Oil

sniper_spike · Post by **sniper_spike** » Sun Nov 05, 2006 8:49 am

Not the most practical solution. Go for phase-change if you want something hardcore, and it's much more practical than LN2. There are tons of guides on the internet on how to make one.

Joes2Silly · Post by **Joes2Silly** » Sun Nov 05, 2006 9:44 am

Well, after reading this I have decided that a phase changing system may be they way to go. Hopefully I'll mange to find a refrigerator

timmeh87 · Post by **timmeh87** » Sun Nov 05, 2006 12:24 pm

yo, dude, to make a proper phase change system you need some serious skillz, including brazing and proper handling of dangerous coolants! you need a lisence to buy any real coolants..

http://gomeler.com/2006/04/16/vapor-pha ... e-cooling/

this link has everything you need to know.

perhaps an easier solution is to make a watercooling system with the radiator inside your still-intact fridge. throw in a peltier for extra kicks (and sub-ambient temps!)

Post by **gannon** » Sun Nov 05, 2006 12:50 pm

hmm...if you live in a somewhat cold room you could use a peltier, then by spreading the heat from the hot side you could warm your room